Safety-razor.



A. J. POSTANS.

SAFETY RAZGR.

APPLIOATION FILED JANA, 1912.

LGQA., Patented Aug. 5, 1913.

fn/www); ma l J/q/J J/d W naa* t SAFETY-RAZOR.

Specification of Letters Patent.

ratenteaang. 5,1913.

` Application led January 4, 1912. Serial No. 669,375.

To all whom t may concern:

Be it known that I, JAMES Pos- TANS, a subject of the King of England,residing'at Brentford, in the county of Middlesex, England, haveinvented certain new and useful Improvements 'in Safety-Razors, of whichthe following is a specification. `This invention is for improvements inor relating to safety razors and has for its object to provide Aa razorwhereof the parts can be easily separated and put together for cleaningand use, and the blade can be readily mounted on a suitable support forstropping or grinding.

It has heretofore" been proposed to con- 'struct safety razors havinggrooved blades which are entered longitudinally into a slot formed in acylinder. The cylindrical joints thus formed are then drawn together bya screw stem engaging one and screwing into a socket in the other tohold the blade in position. According to the present invention however,there is employed with a holder provided with a headed draw-down stem, ablade having on it a socket so disposed that in securing the blade tothe holder the head of the stem can be entered in the socket by movingone engaging part relatively to the other along a line that is parallelwith the edge of the blade.

Conveniently the blade has one socket only and this takes the form of asleeve disposed with its longitudinal axis parallel'to the edge of theblade the sleeve being open on that side which is toward the holder,such opening being of suiiicient width to permit the neck of thedraw-down stem to pass, but narrow enough to hold the head.

In a preferred construction of blade, the socket is placed near the rearportion and the blade has a fiat edge-carrying portion extending to somedistance from and formed integral with the sleeve and the cutting edgeof the blade is beveled on each side and so positioned relatively to thesocket that a line bisecting the angle made between the two bevels willlie within the flat edge-carrying portion of the blade and will beradial to the central axis of the socket. This permits the socket to beu sed for positioning the blade on a grinding or stropping inachine aswell as securing it on the holder, thereby both lessening the cost ofmanufacture and adding to the convenience of stropping. f

lIn the accompanying drawings which illustrate one method of carryingout this invention:-Figur`e l is a perspective view of a razor with theblade attached. Fig. 2 is a perspective view of a razor with the bladeshown in dotted lines in the raised position assumed when it is beingremoved from or placed on the holder, and Fig. 3 is an end view of theblade showing its position on a. grinding or stropping machine.

Like letters indicate like parts throughout the drawings. j

The holder for the blade comprises a handle A thatcarries at one end atable A1. A stem B having a head B1 is mounted obliquely in the holder,the head and part of the stem projecting above the table and theremainder of the stem being accommodated in a socket A2. The socketprojects obliquely from the handle A and the stem extends through it atB2. A spiral spring B3 surrounds that portion of the stem which is inthe socket A2 and tends always to draw .the stem down so that the headB1 is pulled toward the table A1, but the stem can be pushed in theopposite direction by pressure applied at B2.

The blade C has a cutting edge C1 that is carried by a flatedge-carrying portion form-4 ing an integral extension C2 from a socketor sleeve C3. The sleeve is split or open at C4 on that side which istoward the table A1 when the blade is in use and the extension C2projects from one edge of the rsleeve and a second extension C51projectsfrom the other edge of the sleeve in such direction that it projectsbeyond the plane ofthe under surface of the main extension C2 whichconstitttes the cutting portion of the blade. The socketf'ior sleeve C3is suiiiciently large to accommodate the head B1 of the stem B, but theopen portion C4 is too narrow to permit the head to pass through it. Theneck of the stem B, however, can pass this opening and thus, to securethe blade on the holder the head of the stem can be entered in thesocket or sleeve C3 by moving one engaging part relatively to the otheralong a line that i's parallel with the edge of the blade as thelongitudinal axis of the sleeve C8 is parallel With the edge C1.

The front edge ofthe table A1 is provided with teeth A3 constituting theusual safety device and at the back-of the teeth a clearance A3* isprovided to preventthe accumulation of soap-suds.

Pins Aproject from the table and engage oval orifices B4 in the blade.

The two end teeth A5 at he front of `the table are higher than theothers so that the edge of the blade is thereby maintained free of allthe teeth except these two to give the necessary cutting clearance.

The rear extension C5 of the blade rests upon al beveled portion A6 atthe back of the table A1 and it will be seen that when the blade isbrought into place the headed stem pulls it down swinging the blade onthe part A6 as a fulcrum so that the edge of the blade is brought'firmly down upon the front portion of the holder. The pins A4L enteringthe orifices B4 prevent the blade from being displaced sidewise when on.the hclilder but the blade can be raised clear of t em.

To release the blade the user holds the' vhandle A and with the thumbpushes upon the part B2 of the stem B so that the whole stem isdisplaced upwardly lifting the blade from the holder. vThe blade thusclears the pins A4 and can then be slid sidewise ofi' the head B1 of thestem. 'Ihe orifices B* are oval because the stem B moves backwardly aswell as upwardly when pushed to release the blade and therefore the pinsmust allou-r the blade to move backwardly relatively to them before itis lifted sufliciently high to clear them.

l The plane in which the main body of the blade, that is the flatedge-carrying portion C2, lies, conveniently forms approxlmately a rightangle with the plane in which the extension or stop portion Ci of theblade les.

The socket C3 in addition to constituting a means whereby the blade canbe mounted on the holder, provides a convenient device for mo-untin iton a grinding or stropping machine;

facture as well as use aects the cheapness of production.

In Fig. 3 the blade is shown upon a support D that may constitute partof a grinding or stropping machine whereof the grind-- T is is animportant feature ask the easy handling of the blade for manu-ledge-carrying portion C2 and be radial to the socket C3 as shown in thisfigure. When the blade is thus shaped it can be easily ground orstropped and also serves its purpose on the holder to the bestadvantage.

What I claim as my invention and desireto secure by Letters Patent is l.In a safety razor, a blade provided with an open sleeve disposed withits longitudinal axis parallel to the edge of the blade, theedge-carrying portion of the blade extending from one side of the opensleeve and the blade having an extension from the other side of the opensleeve, such extension projecting beyond the plane of the edge-carryingportion of the blade at an angle thereto and the opening in the sleevebeing of reduced width as compared with the internal diameter of theysleeve.

2. In a safety razor the combination ofv a blade, a holder for theblade, and a drawdown stem mounted therein and having a l head thatoperatesby the draw-down movement of the stemsto clamp the blade againstthe holder, the blade being provided w1th a socket for the said head inthe form of an open sleeve disposed with its longitudinal axis parallelto the edge of the blade and with its opening toward .theholder the saidopening being of sufficient width to permit the stem to slide therein ina direction parallel to the edge of the blade, but also suili cientlynarrow to retain the head within the said socket, substantially as setforth.

3. In a safety razor,the combination of a blade provided with an opensleeve disposed with its longitudinal axis parallel to the edge of theblade, the edge-carrying portion of the'blade extending from one side ofthe Vopen sleeve and the blade having an extension from the other sideof the open sleeve,

a holder for the blade, `and a draw-down stem mounted ltherein andhaving a head engaging in the sleeve, the opening in the sleeve being ofsufficient width to permit the entrance of the stem but also beingsufficient-ly narrow to retainv the head in the sleeve, so that the headcan be inserte in the sleeve by relative sliding movement between thehead and the blade parallel to the edge of the blade, the said bladeextension projecting beyond the plane of the edgecarrying portion of theblade and engaging the surface of the back of the` holder, so that thedraw-down action ofthe draw-down stem will turn the ,blade on thissurface as a fulcrum and will bring the edge portion of the blade downfirmly on the front portion.

'portion integral with and extending a dis- In testimony whereof I havesigned my tance from the sleeve and having its free 'name t-o thisspecification in the presence of edge beveled from both sides and sopositwo subscribing witnesses.

tioned relatively t0 the sleeve that a plane ARTHUR JAMES POSTANS.bisecting the two bevels will lie within the i Witnesses:

flat edge-Carrying portion of the blade and l HAROLD H. SIMMONS,

be radial to the central axis of the sleeve. I A. M. HAYWARD.

